"State health officials rolled out groundbreaking rules for the oil and gas industry Monday to address worsening air pollution, including a requirement that companies control emissions of the greenhouse gas methane, linked to climate change."

"The rules would force companies to capture 95 percent of all toxic pollutants and volatile organic compounds they emit.

This would cut overall air pollution by 92,000 tons a year — roughly equivalent to taking every car in the state off the road for a year, state health chief Larry Wolk said. Such reductions could help bring Colorado's heavily populated Front Range, where smog and ozone are on the rise, back into compliance with federal air quality standards."